Bobbin support stop



\MY31L1945' A.SHOESMITH 2,330,709

BOBBIN SUPPORT STOP Filed June 19, 1944 IN V EN TOR.

7 4 Q AL ERT SHOESMITH Patented July 31, 1945 stares PATENT oFFic BOBBIN surron'r STOP Albert Shoesmith, Fall River, Mass., assignor to Draper Corporation, Hopedale, Mass., a corporation of Maine Application June 19, 19. .4, Serial No. 541,038

4 Claims.

The present invention relates generally to bobbin supports and, as illustrated herein, relates more particularly to stops for such supports.

Automatic bobbin changing looms usually inv The drawing shows a hopper stand [0 secured to a lay (not shown) in the usual manner. The hopper stand supports the usual revolving disc (not shown) which moves successive bobbins into position to' be transferred into a shuttle by the usual bobbin transferring mechanism.

The hopper stand I 0 is provided with a laterally ext ending boss i2 which is provided with a threaded opening for receiving a. cap screw M. A swinging bobbin support 56 is pivotally supported by the cap screw l4 and is of usual construction and is normally maintained in a forward or supporting position by a tension spring commercial use are sometimes provided with a stop member, preferably formed of resilient material such, for example, as rubber. Such resilient stop members have been secured in position by bolts extending through holes drilled through the hopper stand. Hence, it was necessary to disassemble the hopper to permit the bolts to be inserted in the holes. This was ob- .iectionable in textile mills because of the time necessary to make the changes and to make the necessary adjustments after the hopper had been reassembled.

One object of the present invention, accordingly, is to provide a stop member for a bobbin support which will be secured in position without the use of fastenings extending through the hopper stand. To this end and in accordance with one feature of the invention, the stop member is provided with a resilient member against which the bobbin support strikes and with means engaging a projection on the hopper stand to support the stop member in stopping position.

With the above and other objects and features in view, the invention will now be described with reference to the accompanying drawing which illustrates a preferred embodiment of the invention and in which:

Fig. l is a perspective view of a portion of a hopper to which a preferred embodiment of the present invention is applied;

Fig. 2 is adetail View of the invention shown in Fig. l with the bobbin supportremoved;

Fig. 3 is a perspective view of the stop member; and

Fig. 4 is view in cross section taken along the line IVIV of Fig. 3.

The drawing shows only part of a loom having my invention applied thereto. The parts which are; not shown are-oi usual construction and form no part of the present invention.

It. A lateral projection 20 on the hopper stand l0 forms a stop which limits the forward movement of the support It.

The parts so far described are substantially the same as shown in United States Patent No. 2,130,- 315 granted September 13, 1938, on an application filed in the name of Carl D. Brown to which reference may be had for a more detailed description of the construction and operation of the parts.

The present invention contemplates the use of a resilient member 22 for limiting rearward movement of the bobbin support IS. The resilient member 22 is formed of rubber or other suitable resilient material such, for example, as

'. "neoprene or other suitable synthetic rubberlike material. The member 22 is secured to a channel member 24, preferably formed of cast iron. The I stop 22 is fixed to the member 24 by a rivet or other suitable fastening 26. The member 24 has upturned end portions 28 and 30, the end portion 28 bearing against the resilient stop 22 and preventing turning thereof about the rivet 26. The member 24 is cutaway at 32 to provide a recess 01' opening in which the lateral projection 20 is received when the member 24 is in proper position on the hopper stand [0.

In order to mount the member 24 on the hopper stand I 0, it is necessary to remove the bobbin support IS. The member 24 then fits over the projection 20 which prevents forward or rearward movement of the member 24. The bobbin support I6 is then replaced and the member 24 is securely held in position between the bobbin support l6 and the hopper stand Ill. The space between the projection 20 and the resilient block 22 is slightly greater than the width of the bobbin support l6. Thus, when the bobbin support I6 is cammed in aclockwise direction as viewed in Fig. 1, the support l6 moves freely a short distance and then engages the resilient block 22. Thus, when the support l6 has been moved a disclockwise movement of the support I6 is prevented. Thus, the support IG is stopped without undue shock on the parts and the compressed block 22 and the s iral spring l8 act together to return the support IE to supporting position. With the above construction, the support l6 cannot overthrow and the parts, therefore, are always returned to supporting position.

The present construction provides a simple and effective stop for the bobbin support It. The resilient block 22, mounted on the member 24, stops the support IS without shock and thus prevents undue wear and breaking of the parts. The member 24 is. mounted in position without the necessity of drilling holes in the hopper stand which further reduces the possibility of breakage since the hopper stand is not weakened.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a bobbin changing loom, a hopper stand,.

a swinging bobbin support for supporting a bobbin in bobbin transferring position, means on said hopper stand for limiting movement of said bobbin support in one direction, and means supported by said first-mentioned means and located between said bobbin support and said hopper stand for limiting movement or the bobbin support in the other direction.

2. In a bobbin changing loom, a hopper stand, a swinging support mounted on said hopper stand for supporting a bobbin in bobbin transferring position, an abutment on said hopper stand for limiting swinging movement of said bobbin support to bobbin supporting position, a member supported by said abutment and located between said bobbin support and said hopper stand, and resilient means carried by said member and arranged to engage the bobbin support to limit movement thereof out of bobbin supporting position.

3. In a bobbin changing 106m, a hopper stand, a swinging bobbin support having a depending arm pivotally supported on said hopper stand,

an abutment on said hopper stand adiacent to the lower end 01 said arm and arranged to be engaged by said bobbin support as it is returned to bobbin supporting position, a bracket member having an end portion fitting over said abutment for supporting said bracket member and having an intermediate portion located between said bobbin support and said hopper stand, and a resilient member fixed to the other end of said bracket and engaging said bobbin support to limit movement of said bobbin support out of bobbin supporting position,

4. In a bobbin changing loom, a hopper stand, a swinging bobbin support having a depending arm pivotally supported on said hopper stand, an abutment on said hopper stand adjacent to the lower end of said arm and arranged to be engaged by said bobbin support as it is' returned to bobbin supporting position, a bracket member having an end portion fitting over said abut-V tending end portion of said bracket and arranged porting position.

to be engaged by said bobbin support to limit movement thereof as it moves out of bobbin sup- ALBERT SHOESMITH. 

